<?php
header("content-type:text/html;charset=utf-8");
class Car{
	private $carMode;
	private $carBand;
	private $weight;
	private $speed;


    function Car($m,$b,$w,$s){
    	$this->carMode = $m;
    	$this->carBand = $b;
    	$this->weight = $w;
    	$this->speed = $s;
    }


	function getWeight(){
		return $this->weight;
	}
	function getSpeed(){
		return $this->speed;
	} 
}
$car1 = new Car("捷达","大众",1.5,160);
print_r($car1);
echo "<br/>";
echo $car1->getWeight();
echo "<br/>";
echo $car1->getSpeed();

class BMWCar extends Car{}
	$bmw1 = new BMWCar("宝马","大众",2,200);
	echo "<pre>";
	print_r($bmw1);
	echo $bmw1->getSpeed();
